dmaengine: idxd: Remove redundant variable cdev_ctx

mainline inclusion
from mainline-v5.14
commit 58cb138e
category: feature
bugzilla: https://gitee.com/openeuler/intel-kernel/issues/I596WO


CVE: NA

Intel-SIG: commit 58cb138e dmaengine: idxd: Remove redundant variable cdev_ctx.
Incremental backporting patches for DSA/IAA on Intel Xeon platform.

--------------------------------

Variable cdev_ctx is set to '&ictx[wq->idxd->data->type]' but this
value is not used, hence it is a redundant assignment and can be
removed.

Clean up the following clang-analyzer warning:

drivers/dma/idxd/cdev.c:300:2: warning: Value stored to 'cdev_ctx' is
never read [clang-analyzer-deadcode.DeadStores].

Reported-by: Abaci Robot <abaci@linux.alibaba.com>
Signed-off-by: Jiapeng Chong <jiapeng.chong@linux.alibaba.com>
Acked-by: Dave Jiang <dave.jiang@intel.com>
Link: https://lore.kernel.org/r/1620298847-33127-1-git-send-email-jiapeng.chong@linux.alibaba.com


Signed-off-by: Vinod Koul <vkoul@kernel.org>
Signed-off-by: Xiaochen Shen <xiaochen.shen@intel.com>